Onyxfone description

Features:
# VoIP Calls
# Cross-platform Instant Messaging - an Android user can chat with an iPhone user or a Windows OS user can chat with a BlackBerry user. Offer unlimited mobile chatting and increase stickiness to your brand.
# Easy Sign Up with Mobile Number as user ID & automatic Buddy List creation with facility to invite phone book contacts to install the app.
# Easy Calling Card usage - No need to dial Access Number, PIN or even Destination Number for making calls.
# Facility to enable Mobile Top Up.